100
V. Blazek and C. Blazek
Fig. 5.5 Multi wavelength muscle pump test. Through innovative, flexible and flat PPG sensors
(left) can—in addition to the venous refilling time (top right) and the peripheral arterial blood
volume pulse - local peripheral (arterial and venous) oxygen saturation for example under the
compression stocking (bottom right) be determined. The amplitude of the arterial blood volume
pulse is approximately 100 times lower than the venous blood volume pulsation during the active
leg exercises
components at the output of both filter groups are added to further signal processing
to calculate the saturation values.
5.7 Preliminary Results and Conclusion
To verify the presented measurement concept in a first study, a commercial pulse
oximeter (tPPG mode) is used and attached to the second toe finger (volunteer in
sitting position). The obtained SpO 2 was 98% while the heart rate was at 84 bpm
(Fig. 5.7 left). Then, locking the arterial inflow into the foot utilizing a wide tourni-
V. Blazek and C. Blazek
Fig. 5.5 Multi wavelength muscle pump test. Through innovative, flexible and flat PPG sensors
(left) can—in addition to the venous refilling time (top right) and the peripheral arterial blood
volume pulse - local peripheral (arterial and venous) oxygen saturation for example under the
compression stocking (bottom right) be determined. The amplitude of the arterial blood volume
pulse is approximately 100 times lower than the venous blood volume pulsation during the active
leg exercises
components at the output of both filter groups are added to further signal processing
to calculate the saturation values.
5.7 Preliminary Results and Conclusion
To verify the presented measurement concept in a first study, a commercial pulse
oximeter (tPPG mode) is used and attached to the second toe finger (volunteer in
sitting position). The obtained SpO 2 was 98% while the heart rate was at 84 bpm
(Fig. 5.7 left). Then, locking the arterial inflow into the foot utilizing a wide tourni-